Efficiency of metaphase II oocytes following minimal/mild ovarian stimulation in vitro fertilization

Table 2 Cycles outcome according to oocyte yield in women who underwent mIVF

	Low (1–2 oocytes) n = 93	Intermediate (3–6 oocytes) n = 136	High (≥7 oocytes) n = 35	p-value
# Mature (MII) oocytes	142	551	326
# Fertilized oocytes (% fertilization rate)	1.4 ± 0.07 (32.1) ^a	3.4 ± 0.1 (68.1) ^b	7.6 ± 0.4 (80.7)^c	<0.0001
# Blastocysts formed per patient (% blastocyst formation rate)	1.2 ± 0.06 (78.4) ^a	2.6 ± 0.1 (57.0) ^b	5.5 ± 0.4 (42.6) ^c	<0.0001
# Blastocysts vitrified	0 ^a	50 ^b	28 ^c	<0.0001
Total number of blastocysts transferred in each group	73 ^a	186 ^b	63 ^c	0.01
% Transferred blastocysts from all vitrified blastocysts	100 ^a	68.1 ^b	80.7 ^b	<0.0001
Miscarriages	17	48	19	0.8
Cumulative clinical pregnancy rate over 6 month period	48 (51.6)	68 (50.0)	15 (42.8)	0.7
Cumulative live birth rate over 6 month period	43^d (46.2)	51^e (37.5)	14^f (40.0)	0.6

Data are presented as mean ± SEM or n (%)
Statistically significant for ^a vs ^b vs ^c in the same row
^d 5 pending ongoing pregnancies, ^e 17 pending pregnancies, ^f 1 pending pregnancy
ANOVA was performed for continuous variables and chi-square test was used for categorical data

ISSN: 2054-7099